Refrigerating apparatus



H. C. FOL-GER RBFRIGERATING APPARATUS Filed Nov. 50. 1923 I5 Sheets-Sheet 1 IN VEN TOR.

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H. C. FOLGER REFRIGERATING APPARATUS Filed Nov 30. 3 Sheets-Sheet 2 IN VEN TORI A TTORNE Y.

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H. C. FOLGER REFRIGERATING APPARATUS Filed Nov. 50, 1923 5 Sheets-Sheet 5 I N VEN TORI A TTORNEY.

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HENRY C. FOLGER, 0F WAVERLY, MASSACHUSETTS, ASSIGNOR ,TO' HOUSING GUM- PAINY, 011' BOSTON, MA

SSAGHUSETTS, A CORPORATION OF MASSACHUSETTS.

REFRIGERATING APPARATUS.

To all whom it may concern:

Be it known tha a citizen of the United t I, HENRY O. FoLoEn, States, residing at Waverly, in the county of Middlesex and State of Massachus etts,

tain new and useful Improvements in Refrigerating Apparatus,

of which the following is a specification.

The invention to relates to apparatu cream and other in be hereinafter described s for refrigerating iceaterials.

One of the purposes of the invention is form of a cabinet in effect is produced by provide a refrigerator desirably in the which the refrigerating containers or cartridges containing a frozen liquid, and preferably a liquid which freezes stantially below 32 desirably may be a Different liquids may example, as a soluti alcohol and water, water, all of whic point.

and preferably a room or chamber at a temperature sub F. This temperature s low as 3 above zero. be employed, such, for on of salt and water, or or calcium chloride and h have a low freezing The containers or cartridges after being nearly filled with such sealed, and are placed in a solution, are closed having a temperature sufficiently low to freeze the solution.

The cartridges liquid are containing the frozen placed inthe cabinet, and preferably in a space which does not have com= munication with the space occupied by the materials for refrigeration. tion is such that when the The construcrefrigerator is opened for the purpose of introducing materials for refrigeration therein, or for re-' moving the 'same therefrom, the space containing the cartridges is not exposed. to the warming effect of the outside air. Thus,

the cooling efi'ect of the cartridges is materially prolonged.

The same cartridges which are employed for cooling the cabinet, may be employed for cooling materials during trans ortatlon.

In my copending 595,840, filed Oct. truck having utilize the application rial No. 120, 1922, is disclosed a a body specially constructed to frozen liquid containing cartridges for refrigerating materials during transportation.

The truck body is well adapted for transporting cans of facturer to custome ice-cream from the manurs, each of whom would have invented oer 595,840 filed Oct. 20, 1922.

The character of the invention may bebest understood by referenw to the following description of one good form thereof shown in the accompanying drawings, wherein:

Fig. 1 is a perspective view of a cabinet embodying the invention, one of the covers being shown removed from the body of the cabinet;

Fig. 2 is a perspective view of one of the can sup-porting frames;

Fig. 3 is a perspective view of the cap for one of the covers;

Fig. 4 is a vertical section through the cabinet; I

Fig.5 is a view looking up toward the bottom of the cabinet;

Fig. 6 is avertical 6-6 of Fig. 4;

Fig. 7 is a perspective view of one of the frozen liquid containing cartridges; and

Fig. 8 is a transverse section through the cartridge.

Referring to the drawings, the cabinet shown therein as one good form of the invention, comprises a bottom frame 1 (Fig. 5) comprising side bars 3 and end bars 5, and an intermediate bar 7 between the side bars 3. At the to 9 (Figs. 1, 4 and ti) comprising side bars 11, and bars 13, and an intermediate bar 15, between the side bars 11. These frames may be of Wood or other suitable ma.- terial. Connecting the bottom frame 1 with the top frame 9 at the corners of the cabinet, are upright metal angle bars 17 having their ends set in angle grooves in the top and bottom frames.

Secured to the under side of the bottom frame 1 are floors 19 of wood or other suitable material. Cork layers 21 rest upon the bottom frame. There are air spaces 22 between the lower cork layers and the floors 19. The bottom frame has grooves 23, and the top frame 9 has grooves 25 in which are fitted side panels 27 and end panels 29 of wood, steel or other suitable material. Within and spaced from said panels are outer cork layers 31 and inner cork layers section taken on line of the cabinet is a frame with a packing 81 desirably in 33. The outer cork layers may be held in spaced relation to the panels by vertical strips 34.

1n the present instance of the invention, the cabinet has a partition 35 dividing the same into two compartments or chambers 37. Said partition may beformed of a pair of cork layers 39 and an intermediate cork layer e1.

The walls and partitions thus formed may be held securely in assembled relation with respect to the top and bottom frames by through bolts 43 extending at suitable intervals through bars of the top and bottom frames. Thus a stron provided without the use 0 screws or nails.

The cork walls of the chambers 37 may have galvanized steel linings 4:5, The inner cork layers 33 and 39 are somewhat shorter than the layers 31' and 41, and resting on the upger edges thereof are outstanding flanges 1 of collars-49 which extend somewhat down into the linings 15, and are formed to provide seats or ledges 51, for a purpose to be described.

Each of the chambers is adapted to receive a cell or chamber to contain the materials for refrigeration. In the present lnstance .of the invention this cell is in the form of an ice-cream can (Fig. 4:) of cylindrical form, and desirably having a capacity of five gallons. Adjacent the upper edge of the can is a circumferential outstandin bead 55.

Suita le means may be provided yieldingly to support the can in the chamber 37. In the present instance, this means comrises a rectangular frame 57 (Fig. 2) having at opposite sides thereof wiresprings 59 of yoke form, and having feet 61 projecting' downward from the frame somewhat and adapted to rest upon the seats 51 referred to.

The can may be lowered through the frame 57 into the chamber 37 until the bead 55 of the can reaches and rests upon the upper edges of the frame 57.

Each of the chambers may be provided with a cover 63 (Figs. 1, 4 and 6) having a top layer 65 of wood. Projecting inward from the layer 65 is a frame 67 in which is placed a block 69 of cork and an outer thin layer 71 of a high grade, more compact form of cork known as gasket cork. The under face of the top layer 35 of the cover is provided with a acking 73 desirably in the form of ru b'er tubing 75 stufied with a cotton core 77. This ackng is'adapted to rest against a wood rame 79 resting upon the upper edges of the cork layers 31 referred to. The inner face of the frame 67 of the cover is provided the form of rubber tubing 83 stuffed with a cotton core 85. This packing' is adapted to rest construction is eiess against the flange 47 of the collar 49 referred to. v

The cover has a tapered opening 87 therein having an aluminum lining 89. This opening is'normally closed by a cap 91 comprising a top layer 93 of wood, on the inner face of which is a cork disk 95 enclosed in an aluminum covering 97. On the inner face of the top layer 93 is a packing99 desirably in the form of rubber tubing 101 stuffed with a cotton core laced over the open- 103. When the cap is ing, the packing 99 wil engage the margin of the cover surrounding the opening, and provide a tight closure of the cap on the cover.

To secure the covers in closed position, each of them may have a pair of straps 105 secured to the rear portion thereof and having outstanding pins 107 for insertion into eyes 109 of screws 11.1 threaded in metal sockets 113 set into and secured to the top frame.

At the front of each cover is a latch comprising a spring wire bent to present -an eye 115 and arms 117 haVing handles 119 at ends thereof. This latch is set in arecess in the cover beneath a plate 121 secured to the cover and having a downward projecting flange 123 with an elongated slot 124 therein. A screw 125 is entered through the plate and the eye 115 and the arms 117 project out through the slot 124, the ends of which limit the outspreading of the arms due to the resilience of the wire. A lock plate 126 is secured to the top frame and has a flaring mouth 126 leading to the lock slots 127.

The construction is such that when it is desired to close the'cover, the pins 107 are inserted into the eyes 109 and then the cover is pressed down causing the arms 117 to pass through the flaring month 126 and then snap out into locking engagement with the slots 127.

losing of the covers will compress the packings 73 into tight engagement with the frames 79, and press the packings 81 into 7 tight engagement with the collar flanges 47. The relation of the covers to the upper edges of the cells orcans 53 referred to. s

such that the gasket cork layers 71 will come into engagement with the upper edges of the cans before the covers are tightly closed. The eye screws 111-may be adjusted so that the downward pressure of the covers to tight closed position'will cause the covers to press the cans downward the circumferential of the portions of the the cartridge.

an effective unit for t As stated, cartridges containing a. frozen liquid are placed in the cabinet to refrige ate the same. In the present instance of the invention, each of these cartridges 129 (Figs. 7 and 8) is of oblong form and has opposed sides 131 whichipreferably are corrugated. The cartridge has edges 133,

with a neck normally closed by a screw plug 139. The cartridge may be formed of sheet metal, and to contribute thereof, the bottom, top andedges may be embraced by a channel-shaped reinforcin band 141 having its flanges 143 inturned an overlapping the corrugated sides of the cartridge. The spaces between the flanges and the corrugations may be filled with solder or other suitable material which may be bevelled away from the edges of the flanges to facilitate sliding the cartridges on top of one another in the freezing room. At the top of the cartridge is a handle 145, and the channel is broken away to permit the handle to be rocked down flush with the outer face channel at the top of The cartridge is nearly filled with the liquid to be frozen, and then the plug 139 ma be inserted into the neck and may be sol ered thereto or otherwise permanently secured. The cartrid e thus constructed is I l e purposes. The corrugated sides provide extended surfaces contributing to quick freezing of the liquid in the cartridges, and contributing to effective refrigeration efi'ect. Also, the corru ations add to the strength of the cartri e and allow expansion and contraction of t 0 sides under temperature changes without straining the cartridge or opening the seams thereof.

The chambers in the cabinet may be formed to receive the cartridges, and in the present instance of the invention, each of the chambers has spaces 146 at opposite sides of the can for receiving two cartridges. When the cover for one of the chambers is opened, two of the cartridges may be readily lowered into said spaces, where they will desirably serve to refrigerate the ice-cream or other materials in the cell or can in said chamber. At the bottom of each chamber there may be rovided a frame.comprising four blocks 14$ connected by a pair of slats 149. Secured to the latter and extending transversely thereof are a pair of slats 151. The cartridges may rest upon the blocks 147, and bricks of ice-cream or other materials may be placed upon the slats 151, if desired.

It will be noted that there is an air space around the can and at the top and bottom thereof through which the cooling efi ect of the cartridges may be transmitted and distribuwd to the can.

a bottom 135, and atop 137, the latter being provided to the strength When the ice-cream cans and the cartrid es are conveyed to customers in the true referred to, the driver on reaching each customer, may take two ice-cream containing cans and four cartridges from the truck and placeone of the cans and two of the cartridgesin each of the chambers of the cabinet, and thus, the same cartrid es which refrigerate the ice-cream cans whi e on the truck, also will serve to refrigerate the icecream cans after the latter are placed in the cabinet.

w The openings 87 in the covers receiving the caps 91 are smaller in circumference than the cans, and therefore, when the caps are opened for the purpose of removing "icecream or other materials from the cans, the spaces 146 occupied by the cartridges will not be exposed to the outside air and the warming effect thereof. This is an important feature of the invention, since liquid frozen at a temperature 'so low as that employed in freezing the liquid in the cartridges is quickly responsive to the effect of temperatures warmer than that of the liqu1 I .Heretofore, it has been customary to pack ice and salt about the ice-cream containing cans in a cabinet. The coolingeifect of the ice and salt packed in the cabinet diminishes, and usually ice andsalt must be repacked about the can, in order to continue the required cooling effect. This results in a variable refrigeration, causing the icecrcam some of the time to be either too hard or too soft. Also, the use of ice and salt for this purpose is a substantial item of expense.

However, by the present invention, the necessity for packing ice and salt about the ice-cream cans is eliminated; the cartridgesv have a substantially uniform cooling effect, so that the ice-cream dispensed from the cans does not become too hard or too soft; and the use of the cartridges results in an important saving in time, since no time is lost in packing ice and salt about the cans, removing melted ice, and repacking ice and salt about the cans.

It is important that the partition 35 which divides the cabinet .into two chambers, shall be provided and made of cork or other suitable heat insulation material, and that the two chambers shall be provided with separate covers. As a result. when one of the covers is opened or its cap is removed, the other chamber or the container therein will not be exposed to the temperature raising effect of the warmer outside air. Also. if one of the chambers is emptied. the cartridges in the other chamber will not have the increased duty of refrigerating the emptied chamber.

, The total surfaces of the cartridges may have a predetermined rat-i0 in respect to the total inner surfaces of the bottom of the chamber and the walls of the chamber other than the partition, which divides the cabinet into two chambers. Three of the walls are subject to the temperature raising effect of the warmer outside air, whereas, the partition being between the two refrigerated chambers is not subject to. such temperature raising effect. An example I of such ratio for good practical purposes may be about one square foot of cartridge surface to one square foot of wall or bottom sur: face exposed to the temperature raising effect of the warmer outside air. Thus the cartridges will have a cooling radiating surface effectively tending to counteract the warming influence of the air on the outer surfaces of the bottom and the three walls of the chamber. The corrugated sides of the cartridgesmaterially increase the radiating surfaces of the cartridges without,

addin .to the overall dimensions thereof, and t erefore, cartridges may be provided sufliciently small to be readily handled and still be effective for the purposes stated.

It will be understood that the invention is not limited to the specific embodiment shown and that various deviations may be made therefrom without departing from the spirit and scope of the appended claims.

Whatis claimed is L'Refrigerati'on apparatus comprising a cabinet having walls inner metal, and intermediate cork layers, said inner layers having ledges thereon, a frame havin springs supported on said ledges, a'can aving a circumferential bead restingon said frame to support the can thereon, said cabinet having spaces for receiving Tfrozen liquid containing cartrid es .at sides ofthe can, a cover for the ca inet having its under face adapted to engage the upper edge of the can, securing means for the cover having provision for pressing the can downward in the cabinet against the resistance of the frame supporting springs, said cover having an opening therein small er than the upper end of t which materials may be removed from t e can without exposing to the outside air the spaces receiving the cartridges, and a cap normally closin said opening.

2. Refrigeration apparatus comprising a cabinet having a chamber therein, a can in said chamber for receiving materials for refrigeration, said chamber being adapted to receive a frozen liquid containing cartridge for cooling the chamber containing the can, a cover for the chamber having its under face adapted for engagement with the rim of the can, means to secure the cover in closed position, and means for pressing the upper edge of the can into tight engagement with the under face of the cover.

3. Refrigeration apparatus comprising a to receive a frigeration,

. means formed of outer wood,

ceiving e can throu h cabinet having a chamber therein, a can in said chamber for receiving materials for refrigeration, said chamber being frozen liquid containing cartridge for cooling the chamber containing the can, a cover for the chamber having its underface adapted for engagement, with the rim of the'can, means. to secure the cover in closed position, means for pressing the upper edge of the can into tight engagement with the under face of the cover, said cover having an opening therein smal er than the upper end of the can, and a cap for closing said opening; y s

A. Refrigeration apparatus comprising a cabinet havin a chamber therein, a'can in the chamber For receiving'materials for rea frozen liquid containing cartridge mounted in the chamber for cooling the materials in the can, a cover for the chamber having mar ins for engagementwith the top of the ca inet, said cover having a portion within said margins for en-- the upper edged the can gagement with andhaving an openingtherein smaller than the can, a cap'for the opening, means for securing the cover in closed position, and

edge of the can and the cover into tight engageaient with each other when the cover is close adapted r automatically pressing the upper 5. A refrigerator comprising a chamber having wallsprovided with heat insulationa container in said chamber for rematerials for refrigeration, chamber having an container, a frozen solution containing cartridge in said air space for cooling the container and the materials therein, a cover for the chamber having provision for closing the cartrid e receiving space from the inlayers,

teridrof t e container, saidv cover having an opening affording access'to the interior of the container without'exposing the cartridge receiving space to the outside atmosphere, and means normally closing said opening.

6. A. refrigerating cabinet having a chain 'ber therein, a container 1n said chamber for receiving materials for refrigeration, said container being smaller than said chamber thereby to leave spaces at sides thereof, frozen liquid containing cartridges in said spaces for cooling the container and the materials therein, a cover for the chamber means to cause the cover and the upper end of the container tightly to engage each other when the cover is closed, thereby to communication between the cartri ge receiving spaces and the interior of the container, said cover having an opening therein enabling access to the interior of the container without exposing the cartridge receivin spaces to the outside air, and means normally closing said. opening, said cover besaid air space adjacent the revent ing movable to permit insertion of the container and the cartridges in said chamber and removal thereof from said chamber,

7 A refrigeratin cabinet having a chamber therein provide with seats, a frame having springs supported on said seats, a container in said chamber having an open upper end, and an outstanding member resting on said frame that the container may be yieldingly supported in said chamber,said container being smaller than said chamber, thereby to provide spaces at sides thereof, frozen liquid containing cartridges mounted in said spaces for cooling the container and materials .therein, a cover for the chamber for engaging the upper end of the container andt'clo'sing' the cartridge receiving spaces from communication with the interior of the container, said cover having an opening therein'smaller than the open upper end of the container enabling access to the interior of the container without exposing the car-, tridge receiving spaces to the outside air, and a removable cap for said opening.

' 8. A refrigerating cabinet having a chamber therein, walls surrounding the chamber formed to provide a ledge a short space heneath the top the chamber, means yieldingly to support the container in the chamber, said container said chamber, a frozen liquid containing of the cabinet, a container, in

being smaller than the chamber to provide an air space around the container, a frozen liquid containing cartridge in said space for cooling said space and the container, a cover having a portion for engagement with the ledge and the upper edge of the container, thereby to close the cartridge receiving space from the outside air, the upper edge of the container being pressed agamst said portion of the cover by the means yieldingly supporting the container, said cover ha an opening therein smaller than the open end of the container, and a cap for said opening,

9. A refrigerating cabinet having a chamber therein, Walls surrounding said chamber formed to provide a ledge beneath the upper end of the chamber, a container mounted in caratter tridge in the chamber for cooling the a cover having a portion and the container,

for engagement with the upper edge of the container, packing means providing t' ht engagement between the ledge and a portion of the cover, packing'means providing tight engagement between the upper ends of the walls and an outstanding portion of the cover, the latter having an opening therein enabling access to the interior of the container, and a'cap for said openin HENRY C. LGER. 

